Lead-pencil.



J. A. HOLLBNBERGER.

LEAD PENCIL.

APPLIOATION FILED mzq.1a, 1912.

Patented Sept. 1, 1914.

THE all/RR rLIERS CO4. PHOTO-LITHOU WASHINGTON. D. u,

STATES 0 Joann, nonnnnnnnenng or HAGEnsrowN, MARYLAND,

I [Lean-PENCIL.

, Application and nce'm eris, 1912. seriarnarkasae.

To all whom it mag/concern I Be it known that I, "JOI-IN'A. HOLLENBER- GER, a citizen of the United States, residing at Hagerstown, in the county of Washington and State of Maryland,haveinvented certain new and useful Improvementsin Lead-Pencils, of which the following is aspecification.

This invention comprehends certain new and useful improvements in lead pencils and relates more particularly to those wherein strips of lead may be fed from the body portion and clamped against movement.

The primary object of the invention resides in the provision of a pencil of this type, which shall be of extremely simple construction, efficient in operation, and cheap to manufacture.

Another and more specific object ofathe invention resides in the provision of a pencil including a longitudinally bored body portion having a tube fitting in one end there of, through which the lead is adapted to project, and a clamping sleeve threaded upon the reduced end of the said tube, whereby the lead is locked against movement, said tube and sleeve forming what might be termed a chuck.

With these and other objects in view as will become more apparent as the description proceeds, the invention consists inycertain novel features of construction,combination, and arrangement of parts, as will be hereinafter fully described and claimed.

For a complete understanding of the in vention, reference is to be had to the follow-, ing descriptlon and accompanying drawings,

in which,

Figure 1 is a side elevation of my 1111-. proved pencil, Flg. 2 is an enlarged elevas, t on of one end thereof, taken at rlght angles to Fig. 1, Fig. 8 is a transverse sectional view taken on line 83 of Fig. 2; Fig. t is a view taken on line 4-4 of Fig. 2, Fig. 5

is an enlarged side elevation, partly broken away, of the tube through which the lead pro ects, and, Fig. 6 is a longitudinal sectional vlew.

Referring to the drawings by numerals, l designates the body portion or, stock of [the pencil, having an eraser Qsecured upon one end thereof and being provided along its entire length with a centrally positioned longitudinal bore 3. One end of the bore is enlarged to form a cylindrical chamber to receive one end of a tube 4, which forms indicated at" 5,ythreade'd,'asyclearly shown v960 -wh1ch provide the clamping jawsi'fi; The aws-6 are of soft and non-resilient metal and operate togrip thelead"'7.i The-b'ore 8 of the tube 4: is about the same diameter'as inFig. 5, and formed with end openingslots;

the bore 3. The unreduced portion of the the "body portion af'chuclni.The fouter l end of. the tube 4* reducedindiameter, as.

tube 4 is provided with the recesses 9, which communicate with the bore 8 and whichlprovide means whereby the lead '7 may be moved longitudinally, the side walls of the bore 8 at the recessed portion of the tube 4 being of less diameter than the bore to allow the lead 7 to project slightly beyond the side walls so that the lead may be readily grasped for adjustment. A threaded clamping ring or sleevelO, having a conical outer end, is

threaded upon the reduced portion 5 and forces the jaws 6 tightly against the lead 7,

whereby the latter is held against movement. The sleeve 10 is roughened externally to provide a finger grip and has the same external diameter as the tube 4. i

In the operation of the pencil, to feed the lead 7, thesleeve 10 is loosened from clamping-engagement with the jaws 6, and the fingers of the operator placed in the recesses 9 to grip the lead 7. After the lead has been adjusted the required amount, the sleeve 10 is tightened and clamps the jaws 6 tightly against the lead, holding it against inward movement. p

' It will be seen from the foregoing desoription that I have provided a pencil of extremely simple construction, and in which the lead may be easily adj usted and securely locked in its adjusted position. It is to be understood that while I have shown and described the preferred embodiment of my" invention, I do not wish to be limited to this exact construction, combination and arrangement of parts, but may make such changes'as will fall spirit of the invention.

By making the jaws 6 of soft non-resilient metal, it will be apparent that when the sleeve 10 is loosened from clamping'engagement with said jaws 6 the jaws 6 willnot I spring open'and allow the lead to glide out from between them and fall to the floor and break into fragments as is the case with other lead pencils of the same character as the subject matterof this application wherewithin the scope and in the clamping members consist of resilient material that spring away from the lead when the clamping sleeve is released. Also by forming the jaws of the soft non-resilient material the lead is securely clamped and is prevented from pushing up into the pencil While writing. I

v Having thus described my inventiomwhat I claim is z- A lead pencil comprising a body portion formed "wlth a longitudinal bore, a tube having a boreof equal diameter to that of thebod' portion fitted within one end of said he y portion, a stick of lead slidable Within the bores of the body portion and tube, said tube being provided upon 0pposite sides with longitudinal recesses communicating with the bore, said stick of lead projecting into the recesses, and means for holding the lead in adjusted position carried by Said tube. I

In testimony whereof I afiix my signature -in presence of two witnesses. JOHN A. HOLLENBERGER.

' .Witnesses:

' J. BQLI GER, v JAMES E. S. PRYOR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G. 7 

